Tailwind CSS v3 color

Tailwind red-50 #FEF2F2

Tailwind CSS v3's red-50 is #FEF2F2. It is an off-white in the neutral family. In OKLCH it sits at lightness 0.971 with chroma 0.013, too low for hue to matter. The nearest CSS named color is lavenderblush (#FFF0F5), ΔE2000 2.8 away.

Relative luminance
0.9099
OKLCH L · C · h
0.971 · 0.013 · 17.4
Best text
Black 19.19:1
Hue family
Neutral
Inspect this color Check contrast

#FEF2F2 color codes

HEX
#FEF2F2
RGB
rgb(254, 242, 242)
HSL
hsl(0, 86%, 97%)
OKLCH
oklch(0.971 0.013 17.4)
OKLab
oklab(0.971 0.012 0.004)
CIELAB (D65)
L* 96.40, a* 4.02, b* 1.44
XYZ (D65)
X 88.65, Y 90.99, Z 96.88
CMYK (naive)
cmyk(0%, 5%, 5%, 0%)

CIELAB and XYZ use the D65 white point; CSS lab() uses D50, so paste the OKLCH or HEX value into stylesheets. CMYK here is a plain formula with no press profile.

Legibility

Contrast: is #FEF2F2 accessible?

Black text on it reaches 19.19:1, passing AAA. White text fails at 1.09:1.

WCAG 2 gives the same ratio whichever color is the text; APCA does not, so its Lc changes sign and size with polarity.

Open the Contrast System

  • Black text on it

    19.19:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc +99

  • White text on it

    1.09:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc 0

    Text is here, unreadable at 1.09:1

  • As text on black

    19.19:1

    • AA passes
    • AA large passes
    • AAA passes
    • APCA Lc −101

  • As text on white

    1.09:1

    • AA fails
    • AA large fails
    • AAA fails
    • APCA Lc 0

    Text is here, unreadable at 1.09:1

Nearest versions that pass 4.5:1

  • For text on white

    #7E7373 4.57:1

    Darkening its OKLCH lightness from 0.97 to 0.57 reaches 4.57:1 on white, keeping the hue.

    Compare both in the Contrast System

  • For text on black

    #FEF2F2 19.19:1

    It already reaches 19.19:1 on black, so no change is needed.

Checking another pair? Use the Contrast Checker.

Studio

Adjust #FEF2F2 live

Move lightness, chroma and hue in OKLCH, or drag on the map. The map is every lightness and chroma at the current hue: sRGB inside the solid area, Display P3 out to the dashed line.

The studio needs JavaScript.

Scale

Shades and tints of #FEF2F2

Eleven OKLCH lightness steps at this hue, each with its contrast against white and black. #FEF2F2 sits at step 50.

  1. 50This color#FEF2F2
    White
    1.09
    Black
    19.19
  2. 100#F2E8E8
    White
    1.20
    Black
    17.48
  3. 200#DFD5D5
    White
    1.43
    Black
    14.61
  4. 300#C5BBBB
    White
    1.87
    Black
    11.19
  5. 400#A99E9E
    White
    2.60
    Black
    8.07
  6. 500#8E8383
    White
    3.66
    Black
    5.72
  7. 600#766C6C
    White
    5.08
    Black
    4.13
  8. 700#5F5555
    White
    7.19
    Black
    2.91
  9. 800#463D3D
    White
    10.52
    Black
    1.99
  10. 900#2E2727
    White
    14.62
    Black
    1.43
  11. 950#1A1414
    White
    18.19
    Black
    1.15

Under each step, white and black text on it; a bold figure passes 4.5:1.

Tailwind CSS v3 red scale

The real Tailwind palette, for comparison with the computed ramp above.

  1. 50This color#FEF2F2
    White
    1.09
    Black
    19.19
  2. 100#FEE2E2
    White
    1.22
    Black
    17.19
  3. 200#FECACA
    White
    1.44
    Black
    14.51
  4. 300#FCA5A5
    White
    1.89
    Black
    11.06
  5. 400#F87171
    White
    2.76
    Black
    7.59
  6. 500#EF4444
    White
    3.76
    Black
    5.58
  7. 600#DC2626
    White
    4.82
    Black
    4.34
  8. 700#B91C1C
    White
    6.47
    Black
    3.24
  9. 800#991B1B
    White
    8.31
    Black
    2.52
  10. 900#7F1D1D
    White
    10.01
    Black
    2.09
  11. 950#450A0A
    White
    16.14
    Black
    1.30

Gamut

How vivid #FEF2F2 can get

A gray has no hue, so no gamut holds a more vivid version of #FEF2F2: more chroma would make it another color.

0.00.20.40.60.80.20.40.60.8 460480500520540560580600620
  • sRGB
  • Display P3
  • Rec. 2020
  • Dominant wavelength
OKLCH chroma
0.013
sRGB edge
No hue
Display P3 edge
No hue
Rec. 2020 edge
No hue
Dominant wavelength
611 nm
Excitation purity
2%
Chromaticity
x 0.3206, y 0.3290

Mixing

Mixing #FEF2F2

Each row is the same mix worked out in a different space, with the halfway color at its end. sRGB, which older CSS gradients use, can sag gray or dark in the middle; OKLab keeps the lightness steps even; OKLCH holds chroma and hue as it goes.

White #FFFFFF

  • sRGB50%#FFF9F9
  • OKLab50%#FFF8F8
  • OKLCH50%#FFF8F8

Black #000000

  • sRGB50%#7F7979
  • OKLab50%#635E5E
  • OKLCH50%#635E5E
In CSS
/* A gradient and a mix, worked out in OKLCH */
background: linear-gradient(in oklch, #fef2f2, white);
color: color-mix(in oklch, #fef2f2 50%, white);

In use

#FEF2F2 in an interface

A button, a link, a heading, a focused field, an icon and a chart line in this color, on a light page and a dark one. Each check is a WCAG 2 contrast minimum: 1.4.3 for text, 1.4.11 for the rest.

Light page

  • Button labelText, 4.5:119.19:1 Passes
  • Link and body-size textText, 4.5:11.09:1 Fails
  • Large headingLarge text, 3:11.09:1 Fails
  • Icons, borders and focus ringsNon-text, 3:11.09:1 Fails

For text on this page, the nearest shade that passes is #7E7373 4.57:1

Dark page

  • Button labelText, 4.5:119.19:1 Passes
  • Link and body-size textText, 4.5:117.12:1 Passes
  • Large headingLarge text, 3:117.12:1 Passes
  • Icons, borders and focus ringsNon-text, 3:117.12:1 Passes

Color vision

How #FEF2F2 looks with color blindness

As a neutral it barely changes under any simulation, ΔE2000 5.7 at most.

Simulated with Machado et al. (2009) at full severity, in linear light.

Simulate a whole page What each type sees

  • Protanopia

    No working red (long-wavelength) cones

    #F4F3F2 ΔE2000 5.1

    Noticeable

    Reads as off-white

  • Deuteranopia

    No working green (medium-wavelength) cones

    #F6F5F2 ΔE2000 5.7

    Noticeable

    Reads as off-white

  • Tritanopia

    No working blue (short-wavelength) cones

    #FFF1F2 ΔE2000 1.0

    Very close

    Reads as off-white

  • Achromatopsia

    No cone color vision; lightness only

    #F5F5F5 ΔE2000 5.4

    Noticeable

    Reads as off-white

Pairing check

A near-neutral has no complementary hue to pair with, so tell it apart from neighboring grays by lightness contrast alone.

Harmony

Color harmonies for #FEF2F2

A neutral has no hue to rotate, so every harmony collapses back to the same gray. Pair it with an accent color instead.

Or pair it by lightness: steps of its own scale as text on it, and what each can carry.

Build a lightness scale in Harmony Studio

  • Step 950 #1A1414 · 16.63:1

    Body text, AAA

  • Step 700 #5F5555 · 6.58:1

    Body text, AA

  • Step 300 #C5BBBB · 1.71:1

    Decoration only, under 3:1

Code

Design tokens

Ready-to-paste tokens in six formats. Rename them to fit your system.

CSS custom property

:root {
  --color-red-50: #fef2f2;
}

Tailwind config

// tailwind.config.js — already built in as red-50;
// pin the v3 value explicitly like this:
module.exports = {
  theme: {
    extend: {
      colors: {
        red: { 50: '#fef2f2' },
      },
    },
  },
};

Tailwind v4 theme

/* app.css — Tailwind CSS v4 */
@import "tailwindcss";

@theme {
  /* v4 has its own red-50; this pins the v3 value. */
  --color-red-50: oklch(0.971 0.013 17.4);
}

Design token (W3C DTCG)

{
  "color": {
    "red-50": {
      "$type": "color",
      "$value": {
        "colorSpace": "srgb",
        "components": [0.9961, 0.949, 0.949],
        "hex": "#fef2f2"
      },
      "$description": "Tailwind CSS v3 red-50"
    }
  }
}

SwiftUI color

import SwiftUI

enum Palette {
    static let red50 = Color(.sRGB, red: 0.996, green: 0.949, blue: 0.949, opacity: 1)
}

Jetpack Compose color

import androidx.compose.ui.graphics.Color

object Palette {
    val Red50 = Color(0xFFFEF2F2)
}

Matches

The nearest match in each system

The closest CSS name, Tailwind shade, RAL Classic paint and Crayola crayon by ΔE2000; under 2 is hard to tell apart side by side. RAL and Crayola values approximate physical colors.

Neighbors

The eight nearest colors on this site by ΔE2000, closest first. Under 2 is hard to tell apart side by side.

Tools

Open #FEF2F2 in the tools

Each opens over this page. More colors live in the Color Library, and every color page is listed on the hub.